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The twin sister of one of the victims of Thursday's deadly bus crash spoke to NBC4 today. Tony Shin reports from Riverside for the NBC4 News at 5 p.m. on Monday, April 14, 2014. (Published Monday, April 14, 2014)

Updated at 8:41 AM EDT on Tuesday, Apr 15, 2014

The sister of a Riverside girl killed in a fiery Northern California bus crash last week spoke out Monday and said she hasn't been able to sleep since losing her beloved identical twin.

Marisol Serrato recalled the moments before her twin sister, Marisa, boarded the ill-fated bus tour to Humboldt State University.

"I had a bad feeling, I was nervous," she said. "I saw my dad in the dream, and he was dressed in all black."

Marisol said she believes it was a sign, but at the time the twin sisters were just excited they both got seats.

"I can't get that image out of my head when I last saw her," she said. "She was just waiting there with my mom and she was smiling. My mom says she got on the bus happy."

After nearly 24 hours of agonizing over whether her sister had survived the crash, Marisol got the confirmation Marisa was killed. The family has since asked for the public to pray for them as they believe that's they only way they will get through her death.

"My heart wants to break. I keep shaking in the night," she said. "I can't stay still. Her image pops and pops in my head over and over again."

Marisa told Marisol that if she ever died, she could read her journal -- something Marisol has decided to do.

"I think she wants me to move forward with this and do something for her, and that's what I'm going to do," she said. "I think, 'Why me? Why did God still want me around? And why her? Why was it her time?'"

Marisol is expected to receive her sister's high school diploma from Norte Vista High School in June. She has also decided not to attend Humboldt State University.

Anyone who wants to donate to the family can do so by using Bank of America trust account for Marisa Serrato, account number 325026597007.